Which Storage Service is Right for Me?

I need an extra drive for my OpenStack VM:

I need a POSIX filesystem shared across a small number of servers:

I need storage which is accessible from lxplus, lxbatch, or the WLCG:

I need to share my files or collaborate with colleages:

I need HTTP accessible cloud storage for my application:

I need to distribute static software or data globally:

I need to archive data to tape:

Improve me !